A command. The first field is the name of the executable and
the second is the list of arguments. For example:

("ls",[|"ls";"-l"|])

.

Notes:

if the name is the empty string, then the first argument
will be used. You should specify a name only if you do not
want the executable to be searched in the PATH. On Windows the
only way to enable automatic seach in PATH is to pass an empty
name.

it is possible to ``inline'' an argument, i.e. split it into
multiple arguments. To do that prefix it with "\000". For
example: